Alexei \a-lexei\ as a boy's name is a variant of Alexander (Greek) and Alexis (Greek), and the meaning of Alexei is "man's defender, warrior; defender, protector". See also Olexei.

The baby name Alexei sounds like Alexi and Alexey. Other similar baby names are Alex, Alexio, Alexan, Alexy, Alexus, Aleksi, Aleksei, Olexi and Olexey.